If δfgh ≅ δijk, which segment is congruent to segment fh?

a. segment ik
b. segment jk
c. segment ij
d. segment fg

part a: 1.08

part b: 27.59

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram